Shao, Emily H., Kevin Gallagher, and Nabeel Malik. 2012. “A 44-Year-Old Woman With a 3-Month History of Bilateral, Painless Visual Loss in the Absence of Other Symptoms”. Digital Journal of Ophthalmology 18 (4). Boston, Massachusetts, USA:12-14. https://doi.org/10.5693/djo.03.2012.12.001.